Improvement in planlng-machines



UNITED STATES PATENT OEEIoE.

THoMAs sHAw, OF PHILADELPHIA, PENNSYLVANIA.

' IMPROVE-MENTIN PLANlNG-MACHINES.

,. Specification forming part of Letters Patent No. 135,941, datedFebruary 18, 1873.

To all whom it may concern:

Be it known that I, THoMAs SHAW, of the city and county of Philadelphia,Pennsylvania, have invented a new and Improved Planer-Bar, and I herebydeclare the following to be a full, clear, and exact description of thesame, reference being hadtothe accompanying drawing and to the lettersof reference marked thereon.

My invention consists in the employment of a bar in the manner and forthe purpose as hereafter described. The object of the invention is toenableordinary planing-machines to reach through work, and performoperations similar to shaping or slotting machines.

In order to enable others to use and practice my invention, I willproceed to describe itsconstruction and operation.

On reference to the accompanying drawing,

whichforms part of this specification, Figure 1 is a side view ofsection of an ordinary planer with the invention attached, and Fig. 2 isan end view of planer-bar.

a, Fig. 1, is the ordinary planer-bed, upon Which the Work is bolted.bis the side braces that support the ordinary tool-carriage g. c is theplaner-bar, supported upon clamp-boxf, andis forked and pivoted at itsback end, as

shown at d, to cross-bar e, and is provided on its outer end with acutting-tool, k. The

socket i is secured in the desired position by the ordinary tool-post l,and is screwed at its lower end into yoke I1, said" yoke being pivoted', as shown in Fig. 2, to clamp-boxf. The cross-bar e is pivoted onits outer ends to body of planer by means of center-bolts run throughsides of braces b, all for the purpose as hereafter described.

It will be observed that the bar '0 has, at

its outer end, all the vertical and horizontal movement that thefeed-carriage g is susceptible of and that the feed of planer willoperate this bar; and that, by reason of the bars projecting length itis capable of reaching through work equal to one-third the length ofplaner bed; and that, by reason of the endthrust character of thebar-forcing cuttingtool, it is capable of taking a cut equal to fullcapacity of planer all of which are great and valuable features andadditions to the planingmachine.

What I claim, and desire to secure by Let ters Patent, is-- Thecombination, as herein described, of the planer-bar 0 with theplaning-machine.

THOMAS SHAW.

Witnesses:

A WILLIAM .GARWOOD,

JAMES KEENAN.

